In RGB, use the blue channel to help you move the tones to a better spot. Set multiple hue clocks on the image one on each face in a fairly mid-tone area. Then use the mouse and the color worms to find the skin tones on the blue channel.

Hover the mouse over some of the skin tones. Right click on them and select mark. then adjust only that part of the blue curve where the skin tones are located.

I was able to get them back with a very slight adjustment. Give it a try and post your results.

Ahh...shorter is not necessarily the goal. When we talk about 12:30 on the hue clock we are talking about the direction of the hand it should fall to the right of 12:00 but not much farther to the right than what would be 1:00 to 1:30; if we were using the short hand on a real clock.

The length of the hand is the saturation of the color. Shorter hands means less saturated and therfore closer to neutral. not necessarily what we want in a skin tone...